The ARRI 1800W SE HMI Lamp represents a new power class of lamp. Designed to be used in the ARRI M18 and ARRISUN 18 lampheads, the 1800W SE HMI produces 1800 watts, has an average life of 750 hours, a luminous efficacy of 92 lumens/watt, and a Color Rendering Index greater than 90 at 6000°K. This lamp operates at 18.5A.